Fluke 87 TRUE RMS MULTIMETER - Page 48

87
Users Manual
40
Specifications (cont)
Frequency Counter Sensitivity and Trigger Level
Input Range Minimum Sensitivity (RMS Sinewave)
(Maximum input for
specified accuracy =
10X Range or 1000V)
5 Hz - 20 kHz 0.5 Hz - 200 kHz
Approximate Trigger Level
(DC Voltage Function)
400 mV dc
400 mV dc
4V
40V
400V
1000V
70 mV (to 400 Hz)
150 mV
0.3V
3V
30V
300V
70 mV (to 400 Hz)
150 mV
0.7V
7V (≤140 kHz)
70V (≤14.0 kHz)
700V (≤1.4 kHz)
40 mV

1.7V
4V
40V
400V
Duty Cycle 0.0 to 99.9%
Accuracy: Within ±(0.05% per kHz + 0.1%) of full scale for a 5V logic family input on the 4V
dc range.
Within ±((0.06 x Voltage Range/Input Voltage) x 100%) of full scale for sine wave
inputs on ac voltage ranges.